comScore MMX® Ranks Top 50 U.S. Desktop Web Properties for February 2014

RESTON, VA, March 25, 2014 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly ranking of U.S. desktop web activity at the top online properties for February 2014 based on data from the comScore MMX® service. For the third straight month, Americans flocked to tax websites as the season to file headed into full swing. February also brought about Valentine’s Day, which meant online visitors shopped for flowers, gifts, greetings cards and holiday foods, causing a boost in traffic to related retail subcategories. It should be noted that February typically sees softer gains overall due to it being three days shorter than January.

comScore Top 5 Gaining Site Categories by Percentage Change in Unique Visitors (Desktop Only)February 2014 vs. January 2014Total U.S. – Home, Work and University LocationsSource: comScore MMX

Total Unique Visitors (000)

Jan-13

Feb-14

% Change

Total Internet : Total Audience

223,602

222,390

-1

Business/Finance – Taxes

24,424

38,207

56

Retail – Flowers/Gifts/Greetings

17,444

23,378

34

Retail – Food

15,922

17,339

9

Retail – Computer Software

61,521

66,819

9

Travel – Transactions

3,580

3,875

8

comScore Top 50 Properties (Desktop Only)February 2014Total U.S. – Home, Work and University LocationsSource: comScore MMX

Reach % denotes the percentage of the total Internet population that viewed a particular entity at least once in February. For instance, Yahoo Sites was seen by 82.3 percent of the 222 million Internet users in February. * Entity has assigned some portion of traffic to other syndicated entities.** Indicates that the entity is an advertising network.

About comScore MMXcomScore MMX provides industry-leading Internet audience measurement services that report details of online media usage, visitor demographics and online buying power for the home, work and university audiences on desktop computers across local U.S. markets and across the globe. comScore MMX reports are used by financial analysts, advertising agencies, publishers and marketers. comScore MMX syndicated ratings are based on industry-sanctioned sampling methodologies.

About comScorecomScore, Inc. (NASDAQ: SCOR) is a global leader in digital measurement and analytics, delivering insights on web, mobile and TV consumer behavior that enable clients to maximize the value of their digital investments. For more information, please visit www.comscore.com/companyinfo.